body{
    font-size: 14px;
    font-family: "微软雅黑";
    background: url("../images/port.jpg") no-repeat;
    background-size: cover;
}
form{
    text-align: center;
    margin: 90px auto 0 auto;
    padding-top: 50px;
    width: 420px;
    height: 250px;
    line-height: 400%;
    background: rgba(255,255,255,0.6);
    border: 1px solid;
    border-radius:25px;
    box-shadow: 10px 10px 5px #888888;
}
.bts{
    text-align: center;
}
.footer{
    text-align: center;
    margin-top: 60px;
    line-height: 25px;
    font-size: 25px;
}